THE Duchess of Cornwall will be able to toast her birthday tomorrow with a gigantic six litre bottle of sparkling wine after receiving it as a present during a visit to a Cornish vineyard.

Camilla enjoyed a special early birthday treat in Cornwall [CAMEL VALLEY/GETTY]

Camilla, 67 on Thursday, was given a £399 Methuselah of sparking rose, a 2012 pinot noir equivalent to nine normal bottles, when she toured the Camel Valley vineyard at Nanstallon, near Bodmin, Cornwall, today.

Its makers, banned from calling it champagne, market the wine as Cornwall.

But Camilla, who is president of the United Kingdom Vineyards Association, immediately issued a challenge to the industry in Britain to come up with an inventive national name for its sparkling wine.

"I still don't think it should be called British sparkling wine.

"I think we should come up with a name for British sparkling wine - because it is champagne and it's very good champagne," she said in comments likely to infuriate the French.

Nursing a glass of sparkling wine, she added: "It should have a special name.

Who doesn't enjoy a sparking glass of wine? [GETTY]

It slipped down a treat

Camilla, duchess of Cornwall

"I'm always waiting for people to come up with good ideas."

Camilla, who visited the vineyard in 2008 and regularly orders wine from it, is passionate about encouraging the rapidly expanding British wine industry.

Her late father, Major Bruce Shand, was a wine merchant after leaving the Army.

She went there today to mark the vineyard's 25th birthday and told how she took some of its wine to Sri Lanka last year when she and Charles went there for the Commonwealth summit.

"I thought it was very important that we serve British wine," she said.

"It slipped down a treat"

Bob Lindo, owner of the vineyard, which makes 100,000 bottles a year, presented the six litre bottle and some glasses to the Duchess, suggesting it could be used for a family occasion.

His son Sam, 37, who is a key figure in the business, has just won international sparkling winemaker of the year.

Camel Valley has been producing award-winning, world-class wines since 1989.

The vineyard is situated in an idyllic setting on sun-drenched south-facing slopes near the Camel River.